i ran with the 144 last year and this year and it ran fine, i geared it down so it would have more power to pull the track. i dont even notice that i am pulling a 144.
they were rebuilt 2 years ago but the shocks seem like there is no nitrogen charge in them, i sit on my sled and it damn nears bottoms out, i have the blocks adjusted to the stiffest setting. so i know a guy that rebuilt my front ones and they are GREAT, so im gonna pull my rear shocks and have him rebuild them too
2000 polaris xc sp 500 with 144 track with WPS rail extensions, custom tunnel extension, boost bottle, dial a jets, 4 inch handle bar riser and bar hooks, extra idler wheels and custom mounted led atv tail light and custom gas can holder